Gas-regulating cock.



PATENTED DEC. s, 1903.

A. M. GUMMEE. GAS REGULATING COCK.

APPLICATION FILED MAY 9. 1903.

N0 MODEL.

INVENZOI? ATTORNEY I W/TNESSES:

Patented. December 8, 1903.

PATENT OFFICE.

. AUGUST M. GUMMER, OF DAYTON, OHIO.

GAS-REGULATING COCK.

SPECIFICATION forming part of Letters Patent No. 746,500, dated.December 8, 1903. Application filed May 9,1903. $erial No. 156,393. (Nomodel.)

To all whom it may concern:

Be it known that I, AUGUST M. GUMMER, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Gas-Regulating Cocks;and I do declare the following to be a full, clear, andexact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to improvements in regulating-cocks for fuel-gasburners, and it consists of a combination-cock through which natural andartificial gases may be admitted to a burner at difiere'nt times.

The object of my invention is to provide means for converting anatural-gas stove or range into an artificial-gas stove or range, andvice versa, or,in other words, my object is to provide a regulating-cockby means of which any disconnections of the gas-supply pipes andburners, pipes, and connections may be obviated in changing from onekind of gas to another--for example, from artificial gas to natural gas,and vice versa. In those localities where natural gas is used for fuelpurposes the increased demand upon the same during the cold seasonscauses more or less depreciation in the supply of such gas, and invarious localities throughout the natural-gas regions of the country thesupply becomes so completely diminished in the winter seasons that asuflicient amount cannot be obtained for the ordinary household uses,and other means of fuel is necessarily resorted to--for example,artificial gas for cooking purposes. Myimproved regulating-cock isdesigned for emergencies of this kind, whereby When the flow of naturalgas becomes diminished to such an extent the artificial gas may beintroduced to theburner by manipulating the regulating-cock.

Precedinga detailed description of the invention reference is made tothe accompanying drawings, of which- Figure 1 is a side elevation of myimproved gas-regulating cock, showing the same connected up with avalve-con trolled supply-pipe and an ordinary mixer. Fig. 2 isa-sectional elevation of the regulating-cock. Fig. 3 is a transversesection of the regulating plug through which the cock is placed in acondition to admit eitherartificial or natural gas. I In a detaildescription of the invention similar reference characters indicatecorresponding parts.

A designates the body of the cook, the same having a longitudinal boreB, an exteriorlyscrew-threaded portion B, adapted for connection withthe supply-pipe G, a stem or prolonged portion F with interiorscrewthreads adapted to receive an exit-tip F, which has an openingtherein of a suitable diameter for the particular burner. The stem Fisprojected into an ordinary mixer J. The .body of the cock has twooppositely-disposed openings providing seats for plugs G and D, theformer of which is provided with an operating-handle O and is interposedbetween the supply-pipe G and the regulatingplug D. The port a in thevalve-plug C is of a similar size or diameter to the bore B and isdesigned to admitthe full pressure to plug D from the supply-pipe G. Theplug D constitutes the means for regulating the admission of the gas tothe mixer J, and the same has ports a, b, and 0 extending at rightangles, so that a quarter-turn of the said plug will bring either theport b or the port 0 in a position to register with the bore B in themain body of the cock.

From Fig. 3 it will be observed that the exit-bore a is of less diameterthan the entrance-bore b. This is owing to the size of gas-burner to beused in connection with the regulating-cock. The bores a and b furnish apassage through the cock for the natural gas. The same having a greatervolume of pressure under normal conditions, its passage must beregulated in accordance with the size of the burner used. The port a isdesigned for the passage of the artificial gas. The cock is providedwith means for attaching detachable exit-tips F, which are provided withproper diameters of ports f in accordance with the size of each burner.The tip F is detachable in order that they may be replaced with tips oflarger or smaller diameters in cases where a change of burners mighttake place. It will be understood,how-

ever, that the present regulating-cock is designed for the manufacturersof gas stoves and ranges, who provide such stoves and ranges with thecomplete fixtures constituting the burners, mixers, and regulating-cocksunited. Therefore the regulating-plug D and the exit-tip F are given thenecessary openings for the particular burners. H and I designate valvesthrough which the artificial and natural gases may be admitted to orexeluded from the supply-pipe G.

Theoperation of my improved regulatingcock is as follows: Assuming thatvalve H is in a position to admit natural gas to the supply-pipe G andthe valve I is in a position to exclude the admission of artificial gas,the regulating-plug D is moved to a position to eifect a registrationbetween the port I) and the bore B, through which the gas passes to theexit-tip F. Should the supply of natural gas become exhausted, the valveH is closed and the artificial-gas valve I is opened. The plug D is thenturned to bring the port cin line with the bore B. In changing from onefuel-gas to another the valve 0 is first closed. ,It will be understoodthat the said valve 0 is also manipulated in shutting ofi or admittingthe gas to the burner. The regulating-plug D cannot cut off the gas atany time, its main object being to admit either form of gas to theburner. It will be borne in mind that artificial gas and natural gas areof two entirely diiferent pressures.

Having described my invention, I claim-- 1. In a gas-regulating cock, abody having two oppositely positioned valve plugs arranged in proximityto each other, one of said plugs controlling a uniform admission of gasto the other, the other of said plugs regulating the supply of gases ofdifierent pressures to the burner, and a detachable exit-tip having abore corresponding to at least one of the bores of the regulating-plug,substantially as set forth.

2. In a gas-regulating cock, a body having a central longitudinal boretherein,and a prolonged end which is adapted to penetrate a mixer, twovalve'plugs projected into said body in proximity to each other, one ofsaid plugs controlling the admission of gas to the other of said plugs,and the other of said plugs constitutinga regulating-valve to regulatethe discharge of gas to the burner, said regulating-plug having ports,one of which is adapted to admit gas of lower pressure, and the other ofwhich is adapted to admit gas of ahigher pressure, and a detachableexit-tip, through which either pressures of gas is admitted to theburner, substantially as set forth.

3. In a regulating cock for gas stoves or ranges, the combination with asupply-pipe, two valve-controlled pipes adapted to admit gases ofdifferent pressures to said supplypipe, of a gas-regulating cockconsisting of a body having a longitudinal bore and terminating in aprolonged portion adapted to enter the mixer of a gas-burner, twooppositelypositioned valve-plugs, one of which has two separate portstherein designed to admit to the burner dilferent pressures of gas, andthe other of said valve-plugs having a single port therein and adaptedto control the admission of either pressures of gas to theregulating-plug, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUST M. GUMMER.

Witnesses:

' R. J. MoOARTY,

CAROLYN M. THEOBALD.

